I first saw Sonny Jim before he was even a baby. Before I was even pregnant.

He was a blastocyst – an embryo of about 200 cells. And it was six days after I’d been sedated to have my eggs collected. Doctors had managed to get 14. Of which 11 survived to the next day. By day five we were left with six still growing in a petri dish at Barts Hospital. Two of them were deemed “A grade.” One of them was Sonny Jim.

When I went back to have the “best looking” of blastocysts implanted – two years ago this month – the specialist spun a screen round to face me. See all that blackness she asked, that’s your uterus. Now see that tiny white speck? That’s the embryo.